You will need: A copy of the book 'One is a Snail, 10 is a Crab&'. (I have not put the book on the IWB presentation, due to copyright issues)\n\nThe lesson was designed to be used as an interview &';one off' lesson. It can therefore be used at any time during a sequence if work, or with a new class. \n\nIn order to support the children, I cut out hundreds of pictures of the creatures from the book, but counters could be used instead. \nI hope it&'s useful - it went really well for me!